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Grade: 11
        The energy difference between two electronic states is 43.5 kcal/Mole. The frequency of light emitted when the electron drops from higher orbit to lower orbit, is:(1)9.14×10^14 cycle/sec(2)45.7×10^14 cycle/sec(3)91.4×10^14 cycle/sec(4)4.57×10^14 cycle/secExplain?????
one year ago

Answers : (1)

Vikas TU
6869 Points
							
From planck's energy eqn.
E = hv =  hc/k
where k is the wavelength put the values,
43.5 x 10^3 x 4.2 = 6.64 x 10^-34 x v
v = 27515 x 10^34 cycle/sec. 
one year ago
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